Therapeutic lamp



June 30, 1931. N. E. GOODRICH THERAPEUTIC LAMP Filed Feb 13 1928 3 Sheets-Sheet l June 30, 1 N. E. GOODRICH THERAPEUTIC LAMP Filed Feb. 13 192 3 Sheets-Sheet 2 JzuerzZor June 30, 1931. N. E. GOODRICH 1,

THERAPEUTIC LAMP Filed Feb. 13 192 3 Sheets-Sheet 3 ill/@7350 Patented June 30, 1931 UNITED STATES NORRIS E'GOODRICH, F BATTLE CREEK, MICHIGAN, ASSIGNOR TO SANITABIUM EQUIPMENT COMPANY, OF BATTLE GREEK, MICHIGAN, A

conrormrron or i MICHIGAN THERAPEUTIC LAMP Application filed February 13, .928. Serial No. 253,833.

This invention relates to therapeutic lamps and more particularly to such lamps of the arc type.

It is highly desirable that these lamps be 6 as compact as possible and capable of convenient adjustment whereby they may be utilized in a plurality of positions in connection with the various ailments requiring therapeutic treatment. It is also highly desirable that such lamps require a minimum of attention and skill in operation and maintenance and that they operate with practical- 1y no noise other than that caused by the arc itself.

It is accordingly the primary object of this invention to provide a therapeutic lamp of the arc type which is constructed to occupy a minimum of space and is of such a convenient shape that its bulk will not interfere with the adjustment of the lamp to accommodate various ailments requiring therapeutic treatment. I

It is also an object of this invention to provide a therapeutic lamp of the arc type which requires a minimum of attention and skill in operation and maintenance.

It is further an object of this invention to provide a therapeutic lamp which makes practically no noise other than that caused by the arc itself.

It is also an object of this invention to provide a therapeutic lamp of the arc type including carbon holding and feeding means whereby carbons of fulllcngth may be used thus requiring a minimum of renewal of the carbons.

Other and further objects of this invention will be apparent as the same becomes better understood from an examination of the specification and claims in connection with the accompanying drawings wherein:

Fig. 1 is a side elevation of a therapeutic lamp embodying this invention,

Fig. 2 is an enlarged fragmentary front elevation partly in section of the lamp proper,

Fig. 3 is an enlarged fragmentary plan view partly in section of the lamp.

Fig. 4 is a longitudinal sectional View of to the solenoid plunger which forms a part of thi1 actuating mechanism for the carbon feed, an

Fig. 5 is a section at the line 5-5 of Fig. 4.

' Referring to the drawings more particularly numeral 6 designates a base compris, ing 3 equi-angularly spaced legs 7 which radiate horizontally from a central hub 8 and are provided with casters 9 at their respective extremities. A tubular standard 11 rises from the hub 8 for supporting a vertically slidable bracket'12. The bracket 12 may be secured in any desired vertical position on the standard 11 by adjusting a clamp screw 13. The bracket 12 is adapted to carry the lamp proper as will be hereinafter explained and the weight of the lamp is counterbalanced by a weight (not shown) within the standard 11 and secured to the bracket 12 by a chain 1- which rides over a wheel 15 mounted at the upper end of the standard.

5. bifurcated member 16 is carried by and extendsfromthebracket 12 forhorizontal pivotal mm'ement and includes a pair of diverging arms 17. The lamp proper is pivotally carried between the end of the arms 17 and includes a frame consisting of a transverse bar 18 rotatably carried between the ends of the arms 17, a circular disc 19 of insulation ma terial secured above said bar and a cylindrical member 21 with its axis perpendicular to $0 the plane of the disc and suspended beneath the same. A semi-spherical lamp bowl or hood 22 is attached to and suspended at its side from the lower end of the member 21 with the open end of the bowl facing out- 35 wardly, whereby the axis of the bowl is perpendicular to the axis of the member 21. Screws 23 act to secure the member 21 to the disc 19 and the hood 22 to said member. A screen 20 is dctachably secured to the rim of the hood 22 for protecting the patient against sparks from the burning carbons. A detachable coi'iecntrator 20a is provided and may be secured to the screen 20 for reducing the effective area of the light for treating particular ailments. The concentrator 20a may be fitted with an applicator adapter 20?) and a throat applicator 200 for throat or similar applications.

The mechanism for supportingand feedm9 ing the carbons preferably with their adjacent ends at substantially the focal point of the hood 22 includes a pair of spaced bars 24: which are suspended from the disc 19 and extend downwardly through the member 21 and into the hood :22 to the lower part thereof. The hood 22 is provided with apertures 25 respectively l'or.the rods 24;. A cross-piece 26 connects the lower ends of the bars 24: and is provided with a central aperture and clamping screw 27 cooperating therewith for adjustahly supporting the lower carbon 28. The lower portion of the hood 22 is provided with an aperture 29 and bushing 31 to accommodate the carbon 28 whereby the same may extend through the hood permitting full length carbons to be used for the lower carbon.

A tubular member 32 is provided for the upper carbon 33 and includes an adjustable clamp 3 at its lower end for said carbon. The member 32 is hollow and adapted to receive and support the carbon 33 therein in any adjusted position. The member 32 extends through an aperture 35 in the hood 22; and a corresponding aperture (not shown) in the disc 19 and is provided at its upper end with a cross-head 3G. The cross-head 36 cooperates with a pair of spaced vertical guide rods 37 attached to and rising from the disc 19 for guiding and permitting vertical reciprocal movement of said member to move the upper carbon 83 relative to the lower carbon to form the arc and feed the carbons. The upper ends of the rods 37 are joined by a plate 87a which is apertured as at 375 to permit the upper carbon to be inserted from above and to guide the same into the member 32.

A cross-piece 38 in the form of an apertured disc connecting the rods 24 in the upper portion of the hood 22 acts to guide the upper carbon 33 and also to prevent the heat of the are from passing upwardly through the aperture This cross-piece 38 is highly heat resistant. having a high fusing point.

The mechanism for actuating the member 32 for causing relative movement between the carbons to form the arc and feed said carbons is mounted on the disc 19 and is insulated thereby from the heat of the are. This mechanism includes a solenoid magnet 39 in circuit with the carbons mounted on a plurality of small springs 41 attached to the disc 19, a plunger 42 within the magnet 39 and retarding means for said plunger consisting of a form of dash pot 43. A rockable frame 44 pivoted intermediate its ends on the rods 37 is connected at its opposite ends respectively to the plunger 42 and the dash pot 43 whereby the movement of the plunger is retarded by the dash pot.

A spring 45 is interposed between the plunger 42 and the respective end of the frame 44 to take care of vibratory or sudden movements of said plunger, such for example as might be due to the use of alternating current. The plunger &2 is preferably constructed as shown in Figs. a and 5. It consists of a core formed of a plurality of small rods 40 of round cross section bound together and held at their ends by caps connected by a central oppositely threaded stem 50. By making the core in this manner with the multiple longitudinally extending rods 40 I find that the plunger does not heat up as in the case of the ordinary plnngers. The springs 41 also ta lie care of any vibratory movements of the magnet 39, such for instance as may be due to the use of alternating current.

The dash pot 42-) consists of a. cylinder to open at its lower end and pivotally connected at its upper end to the respective end of the frame H. A piston 4;? [its within the cylinder lt) and is provided with a stem 4:8 at tached to the disc l.) and capable of a limited pivotal movement about its lower end.

A suitable clutch mechanism l0 acts to connect the frame H at the dash pot side to the member $39 when the plunger is held within the magnet 39 by reason of the energization thereof. The clutch 4 consists of a flat member. 51 which is apertured as at 52 to receive the member 32 and pivoted at one end to a link 53. the latter being connected to the frame 44 at the side thereof opposite the plunger +12. \Vhcn the plunger is actuated to tilt the plate 51 and raise the same cl air of the disc. 19 the sides oi said plate at the aperture 52 will engage the sides of the member 32 to support the same and such engagement will not be broken until the plunger 42 has been released by de-cncrgizing the magnet to cause the plate 51 to lie flat on the disc 19. \Vhen the clutch mechanism has been thus released by the dcenergization of the magnet :39 and release of the plunger *2 the member 32 is permitted to drop thus bringing the carbons together. The magnet 39 being in circuit with the carbons when the latter are together and the cur-.

rent is turned on the solenoid plunger 42 will be drawn downwardly causing the upper carbon 33 to move away from the lower carbon forming the arc. Should the carbons become burned away to such an extent as to cause the arc to go out by reason of the increased gap between them the current would for the moment be shut otl' causing the plunger 42 to be released with the result that the clutch mechanism would be released and the carbons would come together again. As soon as the carbons came together again the are would be reformed as before thus accommodating for the burning of the carbons and providing an automatic feed.

A rheostat a is provided at the base of the standard and has mounted thereon a control switch 407), both the switch and rheostat being in circuit with the carbons and solenoid whereby the rheostat may control the amount of the current and the switch may turn the current on or off. Current is supplied to the circuit by-means of a service cord 10 which may be connected to an ordinary light socket or other source of current.

A suitable hood 54 is detachably secured by means of screws 55 threaded at the upper ends of the rods 37 respectively to enclose the mechanism above the disc. The hood 54 is apertured as at 54a to permit the entrance of the carbons.

A handle 56 threadedly engaged with a suitable screw (not shown) projecting laterally from one of the bearings 18 is adapted to cooperate with the respective arm 17 to hold the lamp in pivotally adjustable position with respect to the supporting member 16.

It is believed that the operation and use ofthe aforedescribed lamp will be apparent without further description.

I am aware that many changes may be made and many details varied without departing from the principles of this invention and I therefore do not wish to be limited to the details shown or described.

I claim: I

1. In a therapeutic lamp, the combination of a lamp support, a frame adjustably carried thereby, alamp hood carried by said frame, means for supporting and feeding the carbons including a reciprocable member operable for causing relative movement be tween the carbons, said member being capable of holding one of the carbons in alignment therewith and provided with means whereby the outer end of the carbon may extend outside of the hood and mechanism for actuating said member including an electrically actuated plunger, a retarding means therefor, a pivotally mounted member connected at spaced points to said retarding means and said plunger respectively whereby the movement of the latter is retarded and a clutch mechanism for transmitting the movement of said pivoted member to said recipro cable member when said pivoted member is actuating in one direction by said plunger.

2. In a therapeutic lamp, the combination of a lamp support, a lamp hood carried by said support and means for supporting a pair of carbons within the hood, said means including. a reciprocable member capable of holding one of the carbons in alignment therewith and provided with means whereby the outer end of the carbon may extend outside of the hood.

3. In a therapeutic lamp, the combination of a lamp support, a lamp hood carried by said support, means for supporting and feeding the carbons with their adjacent ends near the focal point of the hood including a re ciprocable member operable for causing relative movement between the carbons and mechanism for actuating said member including an electrically actuated plunger, a retard ng means therefor, a pivotally mounted member connected at spaced points to said retarding means and said plunger respectively whereby the movement of the latter is retarded and a clutch mechanism for transmitting the movement of said pivoted member to said reciprocable member when said pivoted member is actuated in one direction by said plunger.

4. In a therapeutic lamp, the combination of a lamp support, a lamp hood carried by said support, means for supporting and feeding the carbons with their adjacent ends near the focal point of the hood including a re ciprocable member operable for causing relative movement between the carbons and mechanism for actuating said member including an electrically actuated plunger, a retarding means therefor, a pivotally mounted member connected'at spaced points to said retarding means and said plunger respectively whereby the movement of the latter is retarded, and a clutch mechanism for transmitting the movement of said plunger in one direction to said reciprocable member.

5. In a therapeutic lamp, the combination of a lamp support, a lamp hood carried by said support, means for supporting and feeding the carbons including a reciprocable member operable for causing relative movement between the carbons and mechanism for actuating said member including an elec trically actuated plunger, a retarding means therefor, a pivotally mounted member connected at spaced points to said retarding vmeans and said plunger respectively whereby the movement of thelatteris retarded, and a clutch mechanism for transmitting the movement of said plunger in one direction to said reciprocable member, said clutch mechanism being automatically releasable when said plunger is moved in the other direction.

6. In a therapeutic lamp, the combination of a lamp support, a lamp hood carried by said support, means for supporting and feeding the carbons with their adjacent ends near the focal point of the hood including a re ciprocable member operable for causing relative movement between the carbons and mechanism for actuating said member inclu-ding an electrically actuated plunger, a dash pot, a pivotally mounted member connected at spaced points to said dash pot and said plunger respectively whereby the movement ofthc latter is retarded, and a clutch mechanism for transmitting the movement of said plunger in one direction to said reciprocable member.

7. In a therapeutic lamp, the combination of a lamp support, a lamp hood carried by said support. means for supporting and feeding the carbons including a reci 'irocable member operable for causing relative movement between the carbons and mechanism for actuating said member including an electrically actuated plunger, a retarding means therefor, a pivotally mounted member connected at spaced points to said retarding means and said plunger respectively whereby the movement of the latter is retarded, and a clutch mechanism for transmitting the movement of said plunger in one direction to said reciprocable member, the connection between said pivoted member and plunger including a spring.

8. 111 a therapeutic lamp, the combination of a lamp support, a lamp hood carried by said support, means for supporting and feeding the carbons with their adjacent ends near the focal point of the hood including a reeiprocable member ope able for causing relative movement between the ca rbous and mechanism for actuating said member includ ing an electrically actuated plunger, a dash pot, a pivotally mounted member connected at spaced points to said dash pot and said plunger rcspectively whereby the movement of the latter is retarded, and a clutch mechanism for transmitting the movement of said plunger in one direction to said reciprocable member, the connection between said pivoted member and plunger including a spring.

9. In a therapeutic lamp, the combination of a lamp support, a lamp hood carried by said support and means for supporting a pair of carbons with their adjacent ends near the focal point of the hood, said means including a reciprocable member extending within the hood for holding one of the carbons and provided with means whereby the outer end of the carbon may extend outside of the hood, and means for holding the other carbon whereby the outer end thereof may also extend outside of the hood.

10. In a therapeutic lamp, the combination of a lamp support, a frame including an annular member adjustably carried by said support, a platform secured above said member, a lamp hood secured below said member, the latter acting to space the platform and hood, and means for feeding and supporting carbons for said lamp including a reciprocable member capable of sup 'iorting a carbon whereby the latter may extend through the hood into said annular member, and actuating mechanism for said reciprocable member mounted on said platform.

11. In a therapeutic lamp, the combination of a lamp support, a frame including an aunular member adjustably carried by said sup port, a platform of heat insulation material secured above said member, a lamp hood secured below said member, the latter acting to space the platform and hood, and means for feeding and supporting carbons for said lamp including a reciprocable member capable of supporting a carbon whereby the latter may extend through the hood into said annular member, and actuating mechanism for said reciprocable member mounted on said platform.

12. In a therapeutic lamp, the combination of a lamp support, a frame including an annular member adjustably carried by said support, a platform secured above said member, a lamp hood secured below said member, the latter achig to space the platform and hood and means for supporting carbons for said lamp including amember capable of supporting one of the carbons with its free end extending into the hood and its other end extending outwardly through the hood into saidcarbon supporting annular member and actuating mechanism for said member mounted on said platform.

13. In a therapeutic lamp. the combination of a lamp support, a frame including an annular member adjustably carried by said suppoit and provided with a mount at its upper end, a lamp hood secured to said member at its lower end and means for feeding and supporting carbons for said lamp including a member apable of supporting one of the carbons with its free end extending into the hood and its other end extending outwardly through the hood into said an'nular member and mechanism on said mount for controlling the carbon supporting member.

14. In a therapeutic lamp, the combinm tion of a lamp support, a frame including an annular member carried by said support and provided with a mount at its upper end, a lamp hood seemed to said member at its lower end and means for feeding and supporting carbons for said lamp including a member capable of supporting one of the carbons with its free end extending into the hood and its other 'end extending outwardly through the hood into said annular member and mechanism on said mount for controlling the carbon supporting member.

15. In a. therapeutic lamp, the combination of alamp support, a frame including an annular member carried by said support and provided with a mount at its upper end, a lamp hood secured to said member at its lower end, means for feeding and supporting carbons for said lamp including a member capable of supporting one of the carbons with its free end extending into the hoodand its other end extending outwardly through the hood into said annular memher and mechanism on said mount for controlling the carbon supporting member, and a hood over the upper end of said annular member enclosing said mechanism.

16. In a therapeutic lamp. the combination of alamp supporta frame including an annular member carried by said support, a mount secured at the upper end of said member in a plane normal to the axis the:'e of, a lamp bowl attached at its side beneath said member whereby its axis is perpendicular to the axis of said member and means for supporting and feeding the carbons of the lamp including reciprocable means oper- 5 able longitudinally of said member and supporting one of the carbons in the direction of its movement and mechanism on said mount for actuating said reciprocable means.

17. In a therapeutic lamp, the combination of a lamp support, an annular member carried by said support, a lamp bowl attached at its side beneath said member whereby its axis is perpendicular to the axis of said member and means for supporting and feeding the carbons of the lamp including a reciprocable member operable longitudinally of said annular membersupporting a carbon in the direction of its movement and permitting the carbon to extend outside of the bowl into the annular member.

18. In a therapeutic lamp, the combination of a lamp support,an annular member carried by said support, a lamp bowl attached beneath said member and means for supporting and feeding the carbons of the lamp including a reciprocable member operable longitudinally of said annular member supporting a carbon in the direction of its movement and permitting the carbon to extend outside of the bowl into the annular member. a

In witness of the foregoing I afiix my signature.

NORRIS E. GOODRICH. 

